RM38N0EC _95 ADAS / AD _111850 ADVANCED DRIVER ASSISTANCE SYSTEM _0502175 DYNAMIC RADAR CRUISE CONTROL SYSTEM(for Gasoline Model) C

ADVANCED DRIVER ASSISTANCE SYSTEM DYNAMIC RADAR CRUISE CONTROL SYSTEM(for Gasoline Model) P057162 Brake Switch "A" Signal Compare Failure

DESCRIPTION

When the brake pedal is depressed, the stop light switch assembly outputs a signal to the ECM. The ECM uses this signal to control cancellation of vehicle speed by the dynamic radar cruise control. When the ECM determines that the voltage at terminals STP and ST1- of the stop light switch assembly is both less than 1 V, DTC P057162 is stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P057162	Brake Switch "A" Signal Compare Failure	When the ignition switch is ON and the dynamic radar cruise control system is operating, the ECM detects that the voltage at terminals STP and ST1- is both less than 1 V for approximately 0.5 seconds or more.	· Harness or connector · Stop light switch assembly · ECM	Does not come on	Radar Cruise1	A	SAE Code: P0571

WIRING DIAGRAM

6.063,2.427 6.573,2.896 0.51,0.469 10 false ECM 3.042,2.458 5.333,2.656 2.292,0.198 10 false Stop Light Switch Assembly 3.583,1.406 3.74,1.604 0.156,0.198 10 false B 3.573,0.896 3.729,1.094 0.156,0.198 10 false B 4.167,0.771 4.323,0.969 0.156,0.198 10 false L 4.167,1.573 4.323,1.771 0.156,0.198 10 false L 3.573,1.927 4,2.125 0.427,0.198 10 false GND 2.146,1.542 3.146,1.813 1,0.271 10 false ECU-IGP NO. 3 2.396,1.073 3.396,1.344 1,0.271 10 false STOP 0.615,0.896 2.302,1.094 1.688,0.198 10 false from Battery 0.427,1.406 1.677,1.781 1.25,0.375 10 false from IGP Relay 3.385,0.802 3.542,1 0.156,0.198 10 false 7 3.385,1.302 3.542,1.5 0.156,0.198 10 false 6 3.396,1.802 3.552,2 0.156,0.198 10 false 2 4.344,1.49 4.5,1.688 0.156,0.198 10 false 5 4.344,0.688 4.5,0.885 0.156,0.198 10 false 3 3.052,2.302 3.51,2.521 0.458,0.219 10 false A43 6.083,2.281 6.542,2.5 0.458,0.219 10 false A109 5.417,0.688 5.771,0.906 0.354,0.219 10 false 34 5.417,1.469 5.75,1.688 0.333,0.219 10 false 17 5.667,0.698 6.125,0.896 0.458,0.198 10 false STP 5.677,1.479 6.135,1.677 0.458,0.198 10 false ST1- 2.573,2.979 3.656,3.177 1.083,0.198 10 false to Each ECU

CAUTION / NOTICE / HINT

NOTICE:: ·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

Before replacing the ECM, refer to Service Bulletin.

·

When the ECM is replaced, update the ECU security key.

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>UPDATE ECU SECURITY KEY202111,999999,_V1,_111780,_0504977,RM100000001ZKRX,

PROCEDURE

1.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - BATTERY AND BODY GROUND)

Pre-procedure1

Disconnect the stop light switch assembly connector.

Procedure1

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A43)Location & Routingewd_type=routing;type=c;code=A43 Click Connector(A43)Instrument Panel>Engine Room Main Wire>Stop Light Switch Assemblyewd_type=component;type=c;code=A43;pinno=2
A43-2 (GND) - Body ground	Always	Below 1 Ω

Tester Connection

Condition

Specified Condition

Click Location & Routing(A43)Location & Routingewd_type=routing;type=c;code=A43

Click Connector(A43)Instrument Panel>Engine Room Main Wire>Stop Light Switch Assemblyewd_type=component;type=c;code=A43;pinno=2

A43-2 (GND) - Body ground

Always

Below 1 Ω

Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A43)Location & Routingewd_type=routing;type=c;code=A43 Click Connector(A43)Instrument Panel>Engine Room Main Wire>Stop Light Switch Assemblyewd_type=component;type=c;code=A43;pinno=7,6
A43-7 (B) - Body ground	Always	11 to 14 V
A43-6 (B) - Body ground	Ignition switch ON	11 to 14 V
A43-6 (B) - Body ground	Ignition switch off	Below 1 V

Result:

Proceed to
OK
NG

Post-procedure1

None

2.INSPECT STOP LIGHT SWITCH ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.INSPECT STOP LIGHT SWITCH ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>ON-VEHICLE INSPECTION202111,999999,_59,_111834,_0499900,RM100000001Z0ML,

Result:

Proceed to
OK
NG

3.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - ECM)

REPLACE STOP LIGHT SWITCH ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>REMOVAL202111,999999,_59,_111834,_0499900,RM100000001Z0MK,

3.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - ECM)

Pre-procedure1

Disconnect the A109 ECM connector.

Disconnect the A43 stop light switch assembly connector.

Disconnect each ECU connector.

Procedure1

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A43,A109)Location & Routingewd_type=routing;type=c,c;code=A43,A109 Click Connector(A43)Instrument Panel>Engine Room Main Wire>Stop Light Switch Assemblyewd_type=component;type=c;code=A43;pinno=3,5 Click Connector(A109)Engine Compartment>Engine Room Main Wire / Transmission Wire>ECMewd_type=component;type=c;code=A109;pinno=34,17
A43-3 (L) - A109-34 (STP)	Always	Below 1 Ω
A43-5 (L) - A109-17 (ST1-)	Always	Below 1 Ω
A43-3 (L) or A109-34 (STP) - Body ground	Always	10 kΩ or higher
A43-5 (L) or A109-17 (ST1-) - Body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

Post-procedure1

None

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL202303,999999,_51,_111785,_0503271,RM1000000029P3U,

REPAIR OR REPLACE HARNESS OR CONNECTOR